题目选项分析

比较两个句子语法结构语义，选出最佳答案：

According to a 1996 survey by the National Association of College and University Business Officers, more than three times as many independent institutions of higher education charge tuition and fees of under $8,000 a year as charge over $16,000.

According to a 1996 survey by the National Association of College and University Business Officers, more than three times as many independent institutions of higher education charge tuition and fees of under $8,000 a year than to charge over $16,000.